Rayon spinning



Jan. 7, 1941.V f N. s; enf-.Rimsr 2,223,155

RAYON SPINNING Filed June 2.3, 193'? i Y Y Y A n 7-7 EIGL JNVENTOR. NEO 5.5ER1N15 y ATTORNEY.

Patented Jaap?, 1941 u n l s 2,223,155 t UNITED STATES PATENT FFME 2,228,155 RAYON SPINNING Neo S. Serinis, Gloucester, N. J., assignor to Imperial Rayon Corporation, Gloucester, N. J., a corporation of Delaware Applicatie June 23, 1937, serial Naiiasls 7 claims. (c1. is-si This invention relates to improvements in the as all of the fibers have been suitably started manufacture of artificial fibers and more parin this fashion, the spinnerets lmay be lowered ticularly to the continuous formation of rayon. and the gathered filaments will feed through the One of the principal objects of this invention apertures in the fixed plate I'Inear the surface is to provide an improved means for starting the of the bath. vThe gathered filaments are taken 5 fiow of artificial fibers from a spinneret. vertically upward on common axes of the spin- Another object of the invention is to provide an neret headsand suitably drawn over the guide by improved apparatus for assuring a uniform subapparatus not shown. It will be seen that the stantially vertical feed of the fibers from the fixed plate I1 thus serves as a separator to assure spinneret to a central guide. the gathering of all filaments from all spinnerets 10 Further objects and advantages of the invention and after the lowering of the spinnerets insures a will appear from the following description of a substantially vertical feeding of the filaments preferred form of embodiment of my invention through the length of the setting bath. The plate taken in connection with the attached drawing serves in addition to assure uniformity of travel illustrative thereof and in which of the various thread groups to the central guide. 15

Figure 1 is a broken away perspective `View of If desired, supplemental guides 20 generally the precipitating tank in accordance with my shown in Figure 3 may be provided, which .supinvention. plemental guides can be spring mounted on posts Figure 2 is a view similar to Figure l showing 2l on the fixed guide Il. When the spinneret head the spinneret in a second position. 20 is lowered, the spring guides 26 will expand 2O Figure 3 is a plan view of the guide plate. outwardly and, being curved as shown at 20, they As is well-known in the preparation of artificial will engage the filaments le and carry them to a fibers, more particularly rayon, the cellulose prodsubstantially central point forming a right cone uct is forced through a suitable conduit generally from the spinnerets I2. From the guides iii, the indicated at I0 in Figure 1 into a spinneret I2 filaments pass substantially parallel to the upper 25 from which the artificial fiber Ill discharges into guide 25. The filament lengths from the spina precipitating bath I5 thereby forming into the neret are thus still further unied for the most separate fibrous material. effective discharge of the rayon stock.

In the preparation of artificial fibers and par- The invention is adaptable to various forms ticularly rayon made by the cupro-ammonium of rayon production but is especially desirable for 30 process, I find it desirable to use a multiple numproduction of large denier roving As one exber of spinnerets arranged annularly about a ample, the spinnerets are eaCh adapted t0 dis common center and with substantially uniform charge in the neighborhood of 15,000 denier and angular spacing. Itis particularly desirable, hoW- although this may be increased to as high as ever, to use some form of guide for the filaments 45,000 denier, the practical production is best 35 as they precipitate and I have provided a fixed carried out with a greater number of spinnerets of guide Il suitably supported as by supports I8. the smaller size The denier of each filament This guide is preferably formed with a plurality will vary from one and a half to five depending of openings ie and the spinnerets l2 are suitably upon the desired use for the product.

4.0 mounted on the common head 20 in a spaced While I have shown a preferred form of ern- 40 angular fashion. Preferably the spinnerets I2 bodiment of my invention, I am aware that modieirtend a slight distance above the head 26 and are fications may be made thereto and I therefore preferably of a size equivalent to the openings I9 desire a broad interpretation of my invention so that for starting purposes the head 20 may be within the scope and spirit of the disclosure herein elevated as shown in Figure 2 with the spinand of the claims appended hereinafter. 45

nerets I2 exposed above the guide plate. What I claim is:

To lift the spinnerets simultaneously the head l. In combination with a precipitating bath, a

22e is provided with a post 2| having a handle Z2 guide, a spinneret head having spinnerets thereon, which may be readily grasped by the operator said guide having apertures through which the ou drawing the spinnerets partially toward the top precipitated fiber is conducted and means to proof the bath I5. ject the spinnerets through said guide whereby In starting the fiow of the artificial fiber, the on starting the filaments will be directed through spinneret is lifted to the upper position and the the openings in the guide. starting fiber generally indicated at 2t is grasped 2. In combination with a precipitating bath, a

by hand and carried over the guide 25. As soon guide, a spinneret head having spinnerets thereon, 55

said guide having apertures through which the precipitated ber is conducted and means to project the spinnerets through said guide whereby on starting the laments will be directed through the openings in the guide, and supplemental guide means adjacent the openings to force the la ments into a central position therein When the spinnerets are removed.

3. In combination with a spinneret for articial bers, a guide, said guide having an opening through which the bers from said spinneret are conducted, said spinneret being movable with respect to said guide whereby the spinneret may project through the guide for starting the bers.

4. In combination with an artificial ber precipitating bath, a spinneret head, a plurality of spinnerets thereon arranged in a cluster, means to conduct liquid materials to said spinnerets, a guide over which the formed ber is conducted, an intermediate guide having openings through which separate portions of said ber is conducted, said intermediate guide being adapted to receive the spinnerets and means for moving said spinnerets into said openings.

5. In combination with an articial ber precipitating bath, a spinneret head, a plurality of spinnerets thereon, arranged in a cluster, means to conduct liquid materials to said spinnerets, a guide over which the formed ber is conducted, and an intermediate guide wholly immersed in the bath having openings through which separate portions o-f said ber is conducted, and means to restrict the path of the ber passing through said openings to the center thereof.

6. In combination with an articial ber precipitating bath, a spinneret head, a plurality of spinnerets thereon, means to conduct liquid materials to said spinnerets, a common guide over which the formed ber is conducted, and an intermediate bath submerged guide for each spinneret and centered with respect thereto substantially on the axis of each spinneret.

7. An articial bre precipitation bath comprising a xed plate having a plurality of angularly disposed openings, means adjacent the openings and movable thereinto to guide a bre passing through the openings to the center thereof and spinnerets adapted to be projected into said openings and displace said movable guide means therefrom.

NEO S. SERINIS. 

